<template>
	<view class="good-container">
		<!-- 轮播图区域 -->
		<swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" circular="ture">
			<swiper-item v-for="(item, i) in goods_info.pics" :key="i">
				<image :src="item.pics_big" alt="" @click="preview(i)"/>
			</swiper-item>
		</swiper>
		
		<!-- 商品信息区 -->
		<view class="goods-info" v-if="goods_info.goods_name">
			<!-- 价格 -->
			<view class="price">
					￥{{goods_info.goods_price}}
			</view>
			<!-- 信息 -->
			<view class="goods-info-body">
				<view class="goods-name">
					{{goods_info.goods_name}}
				</view>
				<view class="favi">
					<uni-icons type="star" size="18" color="gray"></uni-icons>
					<text>收藏</text>
				</view>
			</view>
			<!-- 运费 -->
			<view class="yunfei">
				快递：免运费 
			</view>
		</view>
		
		<rich-text :nodes="goods_info.goods_introduce"></rich-text>
		
		<!-- 商品导航组件 -->
		<view class="goods_nav">
		  <!-- fill 控制右侧按钮的样式 -->
		  <!-- options 左侧按钮的配置项 -->
		  <!-- buttonGroup 右侧按钮的配置项 -->
		  <!-- click 左侧按钮的点击事件处理函数 -->
		  <!-- buttonClick 右侧按钮的点击事件处理函数 -->
		  <uni-goods-nav :fill="true" :options="options" :buttonGroup="buttonGroup" @click="onClick" @buttonClick="buttonClick" />
		</view>
	</view>
</template>

<script>
import {mapState,mapMutations,mapGetters} from 'vuex'
export default {
	data() {
		return {
			goods_info:[],
			options: [{
				  icon: 'shop',
				  text: '店铺'
				}, {
				  icon: 'cart',
				  text: '购物车',
				}],
				// 右侧按钮组的配置对象
				buttonGroup: [{
					text: '加入购物车',
					backgroundColor: '#ff0000',
					color: '#fff'
				  },
				  {
					text: '立即购买',
					backgroundColor: '#ffa200',
					color: '#fff'
				  }
				]
		}
	},
	methods: {
		...mapMutations('m_cart',['addToCart','saveToStorage']),
		async getGoodsInfo(goods_id){
			const {data:res} = await uni.$http.get('/api/public/v1/goods/detail',{goods_id})
			if (res.meta.status !== 200) {
				return uni.showMsg()
			}
			res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g,"<img style='display:block;' ")
			this.goods_info = res.message 
		},
		preview(i){
			uni.previewImage({
				current:i,
				urls:this.goods_info.pics.map(x=>x.pics_big)
			})
		},
		// 右侧按钮
		buttonClick(e){
			if(e.content.text === '加入购物车'){
				// 商品的信息对象
				const goods = {
					goods_id : this.goods_info.goods_id,
					goods_name : this.goods_info.goods_name,
					goods_price : this.goods_info.goods_price,
					goods_count: 1,
					goods_small_logo : this.goods_info.goods_small_logo,
					goods_state: true
				}
				// 通过 this 调用映射过来的 addToCart 方法，把商品信息对象存储到购物车中
				this.addToCart(goods)
				
			}
		},
		// 左侧按钮
		onClick(e){
			if(e.content.text ==='购物车'){
				uni.switchTab({
					url:"/pages/cart/cart"
				})
			}
		}
		
	},
	onLoad(option) {
		const goods_id = option.goods_id
		this.getGoodsInfo(goods_id)
	},
	computed:{
		...mapState('m_cart',['cart']),
		...mapGetters('m_cart',['total'])
	},
	watch:{
		total:{
			handler(newVal){
				const findResult =  this.options.find(x=>x.text ==='购物车')
				if(findResult){
					findResult.info = newVal
				}
			},
			immediate:true
		}
		
	}
}
</script>

<style lang="scss" scoped>
swiper{
	height: 750rpx;
	image{
		height: 100%;
		width: 100%;
	}
}
.goods-info{
	padding: 10px;
	padding-right: 0;
	.price{
		color: #c00;
		font-size: 18px;
		margin: 10px 0;
	}
	.goods-info-body{
		display: flex;
		justify-content: space-between;
		.goods-name{
			font-size: 13px;
			margin-right: 10px;
		}
		.favi{
			width: 120px;
			font-size: 12px;
			display: flex;
			flex-direction: column;
			align-items: center;
			justify-content: center;
			border-left: 1px solid #efefef;
			color: gray;
		}
	}
	.yunfei{
		font-size: 12px;
		color: gray;
		margin: 10px 0;
	}
}
.goods_nav{
	position: sticky;
	bottom: 0;
	left: 0;
	width: 100%;
	z-index: 999;
}

</style>
